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Finding the Fourth Proportional to 529,378.09, 730,482.46 and 299,886.21

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Solution

The fourth proportional to 529,378.09, 730,482.46 and 299,886.21 is: 413,809.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,378.09 : 730,482.46 = 299,886.21 : x
  2. Step 2: Convert to fraction form
    529,378.09/730,482.46 = 299,886.21/x
  3. Step 3: Cross multiply
    529,378.09x = 730,482.46 × 299,886.21
  4. Step 4: Simplify right side
    529,378.09x = 219,061,615,651.16
  5. Step 5: Solve for x
    x = 219,061,615,651.16/529,378.09
  6. Step 6: Final answer
    x = 413,809.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.